This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 13 |
| 3 | 23 |
| 4 | 113 |
| 5 | 137 |
| 6 | 1131 |
| 7 | 1137 |
| 8 | 1373 |
| 9 | 11379 |
| 10 | 11317 |
| 11 | 23719 |
| 12 | 111317 |
| 13 | 113171 |
| 14 | 211373 |
| 15 | 1113171 |
| 16 | 1113173 |
| 17 | 1317971 |
| 18 | 2313797 |
| 19 | 11131733 |
| 20 | 11317971 |
| 21 | 13179719 |
| 22 | 82337397 |
| 23 | 52313797 |
| 24 | 113179719 |
| 25 | 113733797 |
| 26 | 523137971 |
| 27 | 1113173331 |
| 28 | 1131797193 |
| 29 | 1797193373 |
| 30 | 2113733797 |
| 31 | 11131733311 |
| 32 | 11719337397 |